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Copyright  1900  by  Warner  &  Swasey,  Cleveland,  Ohio 


»  V     — ' 

Astron.  Dei 


ASTBONOM?   DIPT. 


THE    WORKS    OF 

WARNER    d.    SW  ASE  Y 


Introduction 

'  I  ^ H  K  number  of  leading  observatories  for  which  we  have 
designed  and  made  astronomical  instruments  affords  us 
an  opportunity  to  bring  together  a  series  of  illustrations  which 
we  feel  will  not  only  be  of  general  interest,  but  also  of  service  in 
showing  the  magnitude  and  completeness  of  modern  astronomical 
equipment. 

We  feel  that  the  illustrations  speak  for  themselves,  and  it  has 
therefore  seemed  to  us  that  a  mere  mention  of  some  of  the  instru- 
ments and  observatories  would  be  even  preferable  to  elaborate 
description. 

The  objectives  of  the  three  largest  telescopes,  those  of  the 
Yerkes,  Lick  and  Naval  Observatories,  were  made  by  Messrs. 
Alvan  Clark  &  Sons,  while  the  objectives,  and,  in  fact,  all  the 
optical  parts  for  the  other  instruments  shown,  are  from  the  works 
of  Mr.  J.  A.  Brashear. 

We  are  glad  to  acknowledge  our  indebtedness  to  the  astron- 
omers of  the  several  observatories  for  their  courtesy  in  supplying 
certain  of  the  photographs  here  reproduced. 

WORCESTER   R.  WARNER 
AMBROSE  SWASEY 


R.   M.   HUNT 

ARCHITECT 


PRIVATE   OBSERVATORY   OF 

MESSRS.    WARNER    &    SWASEV 


Plate    I 


Plate   II 


6-INCH  TELESCOPE 


FROM    THE    WORKS   OF 

WARNER    &    SW ASE Y 


8-INCH  TELESCOPE 


FROM    THE    WORKS    OF 

WARNER    &    SW ASE Y 


Plate      III 


12-INCH   TELESCOPE 


Plate   IV 


FROM    THE    WOKKS    OF 

WARNER    &    SWASEY 


* 


POSITION   MICROMETER 


FROM    THE    WORKS   OF 

WARNER    &    SW ASE Y 


Plate    V 


\ 


STANDARDV,HRbNO<5HAt>^  '    ''  ,  *  T 


FROM    THE    WORKS   OF 

WARNER    &    SW ASEY 


Plate    VI 


3-INCH  COMBINED  TRANSIT  AND  ZENITH  TELESCOPE 
FOR  THE  UNIVERSITY  OF  ILLINOIS 


FROM    THE    WORKS   OF 

WARNER    &    SW ASEY 


Plate    VII 


3-INCH   UNIVERSAL  PRISM   TRANSIT  FOR  THE 
UNIVERSITY  OF  PENNSYLVANIA 


FROM    THE    WORKS    Or 

WARNER    &    SW ASE  Y 


Plate    VIII 


4-INCH  ZENITH  TELESCOPE  FOR  THE 
UNIVERSITY  OF   PENNSYLVANIA 


FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


Plate    IX 


Plate    X 


5-INCH   ALT-AZIMUTH   FOR  THE   U.  S.   NAVAL 
OBSERVATORY 


FROM    THE    WORKS    OF 

WARNER    &    SWASEY 


6-INCH  STEEL  MERIDIAN  CIRCLE   FOR  THE 
U.  S.   NAVAL  OBSERVATORY 


FROM    THE   WOBK9   OF 

WARNE  R    &    SWASEY 


Plate    XI 


4*1 


•  *      ••••_•••„•       •    • 

«,  .  .V. :    ::•  •' ::.:  :*.  •"  r;. 


STEEL  MICROMETER  FOR  THE  6-INCH   MERIDIAN   CIRCLE 
OF  THE  U.  S.   NAVAL  OBSERVATORY 


FROM    THE   WORKS   OF 

WARNER    &    SW ASE Y 


Plate    XII 


SOME  ASTRONOMICAL  INSTRUMENTS  MADE   FOR  THE   U.  S.   NAVAL 

OBSERVATORY,   UNIVERSITY  OF  PENNSYLVANIA 

AND  OTHERS 

IN    THE    WORKS   OF 

WARNER    4.    SWASEY 


Plate    XIII 


•::.•>.:  ;:    •:•••. 

••  •  •  - 


• 


40-INCH  AUTOMATIC  GRADUATING   ENGINE 
MADE  AND   IN   USE 

AT   THE  WORKS  OF 
WARNER    &    SW ASE Y 


Plate    XIV 


A.  W.   FULLER 

ARCHITECT 


DUDLEY  OBSERVATORY,   ALBANY,   NEW  YORK 
12-INCH  TELESCOPE 


FROM    THE    WORKS    OF 

WARNER    &    SW ASE Y 


Plate    XV 


OBSERVATORY  OF  THE  SYRIAN   PROTESTANT  COLLEGE 
BEIRUT,  SYRIA 


12-INCH  TELESCOPE 


FROM  THE   WORKS  OF 
WARNER    &    SW ASE Y 


Plate    XVI 


J.  W.  STEVENS 

ARCHITECT 


THE  QOODSELL  OBSERVATORY,   CARLETON  COLLEGE 
NORTHFIELD,   MINNESOTA 


16-INCH  TELESCOPE,   AND 
17  AND  30-FOOT   DOMES 


FROM    THE    WORKS    OF 

WARNER    &    SWASEY 


Plate    XVII 


EDGAR   V.  SEELER 

ARCHITECT 


THE  FLOWER  OBSERVATORY,   UNIVERSITY  OF  PENNSYLVANIA 
PHILADELPHIA,   PENNSYLVANIA 

30-FOOT  DOME 
18-INCH  TELESCOPE 
4-INCH   MERIDIAN  CIRCLE 
4-INCH  ZENITH  TELESCOPE 
3-INCH   UNIVERSAL   PRISM   TRANSIT 

FROM    THE   WORKS   OF 

WARNER    &    SWASEY 


Plate    XVIII 


R.   M.   HUNT 

ARCHITECT 


U.   S.   NAVAL  OBSERVATORY,   WASHINGTON,   0.  C. 

26-INCH  TELESCOPE 

45  AND  26-FOOT   DOMES 

6-INCH  STEEL  MERIDIAN  CIRCLE 

5-INCH  ALT-AZIMUTH,   ETC. 

FROM    THE   WORKS   OF 

WARNER    &    SWASEY 


Plate    XIX 


R.   M.    HUNT 

ARCHITECT 


THE   U.  S.   NAVAL  OBSERVATORY  BUILDING    IN  WHICH  THE 

26-INCH   EQUATORIAL  IS  MOUNTED.     TELESCOPE, 

ELEVATING  FLOOR,   AND  DOME 

FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


Plate    XX 


26-INCH  TELESCOPE  OF  THE   U.  S.   NAVAL  OBSERVATORY 


Plate    XXI 


FROM    THE    WORKS   OF 
WARNER    &    SW ASE Y 


26-INCH   TELESCOPE  OF  THE   U.   S.    NAVAL  OBSERVATORY 


Plate    XXII 


FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


DRIVING  CLOCK  OF  THE  26-INCH  TELESCOPE  OF  THE 
U.  S.  NAVAL  OBSERVATORY 

FROM    THE   WORKS   OF 

WARNER    &    SWASEY 


Plate    XXIII 


WRIGHT  &   SANDERS 

ARCHITECTS 


THE   LICK  OBSERVATORY,   UNIVERSITY  OF  CALIFORNIA 
MOUNT  HAMILTON,   CALIFORNIA 

36-INCH  TELESCOPE 

FROM    THE    WORKS   OF 

WARNER    cS.    SW  ASE  Y 


Plate    XXIV 


»4V.     V: 

. . . .  .  ••-•  ••  • 
•    •  :•  •  •  !.* :'  ;:,•*, 


36-INCH   LICK  TELESCOPE 


Plate    XXV 


FROM    THE   WORKS   OF 
WARNER    &    SW ASEY 


36-INCH   LICK  TELESCOPE 


FROM    THE    WORKS   OF 
WARNER    &    SW ASE Y 


Plate    XXVI 


EYE   END  OF  THE  36-INCH   LICK  TELESCOPE 


FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


Plate    XXVII 


THE   LICK  OBSERVATORY  IN  WINTER 
36-INCH  TELESCOPE 


FROM    THE    WORKS   OF 

WARNER    &    SW ASE Y 


Plate    XXVIII 


HENRY   IVES  COBB 

ARCHITECT 


THE  YERKES  OBSERVATORY,   UNIVERSITY  OF  CHICAGO 
WILLIAMS  BAY,  WISCONSIN 

40-INCH  AND   12-INCH  TELESCOPES 
75-FOOT   ELEVATING  FLOOR 
90,  30  AND  26-FOOT  DOMES 

FROM    THE    WORKS    OF 

WARNER    &    SWASEY 


Plate    XXIX 


40-INCH  TELESCOPE  OF  THE  YERKES  OBSERVATORY 

FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


Plate     XXX 


EYE   END  OF  THE  40-INCH  YERKES  TELESCOPE 

FROM    THE    WORKS   OF 

WARNER    &    SWASEY 


Plate    XXXI 


EQUATORIAL  HEAD  OF  THE  40-INCH   YERKES  TELESCOPE 
VIEW   FROM   THE   NORTHWEST 


Plate     XXXII 


FROM    THE    WORKS   OF 
WARNER    &    SW ASE Y 


EQUATORIAL  HEAD  OF  THE  4O-INCH   YERKES  TELESCOPE 
VIEW   FROM   THE  SOUTHEAST 


Plate    XXXIII 


FROM    THE    WORKS   OF 

WARNER    &    SW ASE Y 


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40.NCM  TELESCOPE 
DOME  A»  75rr  ELEWNC  FLOOR 

FOR  THE  YE'.RKTS  CGitnvATORY 


Plate    XXXIV 


Plate    XXXV 


TWO  VIEWS  OF  THE  MICROMETER  OF  THE  40-INCH 
YERKES  TELESCOPE 


FROM    THE    WORKS   OF 

WARNER    4    SW ASE Y 


THE  40-INCH   YERKES  TELESCOPE  AT  THE  WORLD'S  COLUMBIAN 
EXPOSITION,   CHICAGO,   1893 


Plate    XXXVI 


AS    EXHIBITED   BY 

WARNER    &    SW ASEY 


sf       ^ 

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14  DAY  USE 

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